Chiaki Hagino is a main character in the series Hinako Note.The landlord of Hitotose Manor, where Hinako Sakuragi lives. Mayuki's classmate and a former member of the Fujimiya High School theatrical club. She's usually quiet but completely changes when she gets on the stage.
- She receives a lot of Valentine Chocolates from her fan girls.
- Helped Hinako to change her clothes, and made her shy in the process.
- Complimented Hinako's bunny outfit while blushing, saying that it's cute.
- Held Hinako when she almost fell on the floor during the dance training.
- Took a rest by Mayuki's side on the train.
- Groped Mayuki in the ocean by a mistake, by the fear of a shark-Kuina.
- Pats Mayuki's head before going to the theater club.
- Sat on a table with Mayuki to have some special ice cream with her, then was fed by her.
- Complimented Yua's name.
- Complimented Yua's body in the lingerie store.